Preston Peak

1915

1:125k

Northern California, Del Norte County (sheet 1)

1844

California: Office of State Engineer

1:253k

Geologic Map of California, Weed Sheet.

1963

California Division of Mines and Geology

1:250k

Oblique Map of the Northern California Continental Margin.

1979

Gerin, Marybeth

(Sheet 1) Heald-Menerey's Geographical, Commercial and Recreational Map of California

1927

Heald-Menerey Company, Inc.; Heald, Ralph P.

Text: Explanatory Data. Weed Sheet. Index Map: Index to Geologic Mapping used in Compilation.

1963

California Division of Mines and Geology

Metsker's map of Humboldt County, California

1942

Chas. F. Metsker

1:127k

Text: Explanatory Data. Redding Sheet. Index Map: Index to Geologic Mapping used in Compilation.

1962

California Division of Mines and Geology

Siskiyou County.

1935

California Division of Highways

1:107k

Northern California.

1866

Holdredge, Sterling M.

1:2m